IPv6 prefix used on the provider side for translation. If the value is left empty, a DNS prefix discovery according to RFC 7050 is performed to automatically determine the PLAT prefix.
- SNMP ID:
 - 2.2.63.4
 - Console path:
 - Setup > WAN > 464XLAT
 - Possible values:
 Max. 43 characters from [A-F][a-f][0-9]:./
- Default:
 - 64:ff9b::/96